Shade-fastening means for window-shade rollers



C. W. KIRSCH Sept. 15. 192s.v I 1, Z

SHADE FASTENING MEANS FOR WINDOW SHADE ROLLERS Filed May 5 1923 2 Shanta-Span. 1

Sept. 15, 1925; 1,553,862

C. W. KIRSCH SHADE FASTENING IEANS F0 R WINDOW SHADE ROLLERS Filed lay 5. 1923 2 Shoots-Shoot 2 Patented Sept. 15, 1925.

UNITED STATES CHARLES WENDEL mason, e1 S'IURGIS, MICHIGAN.

SHADE-FASTENING MEANS FOR WINDOW-SHADE ROLLERS. Y

Application filed May 3, 1923. Serial No. 686,301.

T all whom it may concern:

Be it known that I, CHARLES W. KIRSOH, a citizen of the United States, residing at Sturgis, in the county of St. Joseph and State of Michi an, have invented certain new andhsefu Improvements in Shade- Fastening Means for Window-Shade Rollers, of which the following is a full, clea r,' concise, and exact description, reference being had to the accompanying drawings,

forming a part of this specification.

This invention relates to improvements in window shade rollers, and more particularly to metal window shade rollers, and has for its object to provide means for readily and detachably securing window shades to such rollers.

The invention relates more particularly to certain details of construction applicable to window shade rollers of the character described and claimed in my copending application for Letters Patent of the United States filed April 5, 1923, Serial 'No. 630,05 reference to said a plication being herein made for purposes of permitting the objects of the present invention to be more particularly understood.

The present invention in its several pre ferred embodiments is illustrated in the accompanying drawings, wherein Figure 1, is a fragmentary perspective view, partly in section, of a roller and shadecloth securing means, constructed in accord-. ance withthe invention. V

Fig. 2, is a fragmentary view in elevation of the roller.

Fig. 3, is a transverse section of the same on the line 3-3 of Fig. 2.

Fig.4, is a view in elevation, similar vto Fig. 3, taken at a oint approximately ninety degrees remove therefrom.

Fig. 5, is a detail perspective view of one of the fasteningdevices shown in the abovementioned figures.

Fig. 6 is a view similar to Fig. 1, showing another embodiment of the invention.-

Fig. 7, is a view similar to Figures 1 and 6, illustrating still another embodiment of the invention. Y

Fig. 8,'is a perspective view of thefastening device. shown in Fig. 7, and also shown in Fig. 6.

Fig. 9, is a view similar to Fig. 1, showing still another embodiment of the invention.

Fig. 10, is a perspective view of the firstening device illustrated in Fig. 9.

' The said shade roller, 1 described and claimed in the aforesaid copending applicatlon, includes a hollow cylinder 1, which is provided with diametrically opposed formations which provide ribs 2 projecting into said cylinder and grooves or channels 3 in the exterior thereof, both extending the entire length of the roller. The cross-sectional shape of said formations may be varied as desired, as shown in the several figures of the drawings. Preferably, how-- ever, saidformations are relatively shallow i and have substantially radially disposed side walls and a flat bottom. The radial wallsare preferably perforated or provided w1th longitudinal slots 4 at regular and frequent intervals throughout the length of the roller, being, for example, spaced one or two inches apart as desired. Preferably only one of said radial walls of each formation is thus perforated, though both may obviously be, for reasons which will be hereinafter particularly set forth.

Associated with the perforations 4' are perforations 5 in the body of the roller, disposed preferably about ninety degrees removed from the formations. perforations 5 is practically rectangular and each thereof has extension portions 6 preferably midway between its side edges. One end portion of the shade'cloth of the window shade 7 is adapted to be depressed into one of the grooves 3, a portion of said shade cloth overlapping that portion of the roller which lies between said formation and the contiguous row of perforations 5. Said shade cloth is then secured by means of fastening devices shown in Fig. 5, each ofwhich comprises an arcuate strip 8 of metal preferably, for example, light spring brass, which terminates at one end in an inwardlyextending loop or hook 9 which is adapted to enter the perforation 5. The distance between the free end of said loop or hook 9 and its juncture with the main portion of the strip 8 is slightly greater than the width of the perforation 5, so that said loop 9 must be forced through said perfora- Each of said shade cloth, said free end portion of said 7 hook or loop 9-wil1'spring past the wall of the perforation contiguous tothe extension portion 6 of the latter, so as to prevent said hook from being withdrawn-from said perforation, except by first effecting contraction thereof. -Such contraction is effected by inserting a suitable tool, such, for example, as an ordinary nail, small screw driver or the like, into the extension portion 6 of the perforation 5 and, by using the outer wall of said extension-'portionas a'fulcrum, using such nail ortool as a lever to bear upon'the fr ee end portion of the hook orloop'9'to contract'the same "to'the extent necessary to enable it to pass out of said perforation. The pivotal movement of the nail or tool also generally effects projection of the loopor hook 9' from the perforation 5. But such projection is ordinarily automatic, by reason of the fact thatth'e radius of the arcuate. strip Sis, preferably, greater than that of the roller.

The other endfportion of said strip 8 is preferably wider than the main portion thereof, and is provided with a channeled formation 10 corresponding substantially in its outer'dimensions with the dimensions of the groove 3 with allowance for the thickness of the shade cloth to be engaged between said channeled formation and the-opposed walls of saidgrooye'B. One side wall or flange 11 of the channeled formation '10 is slotted,fand projecting from said edge of the middle or bottom portion 9 of said formationis a sharp ended tongue 12 which is adapted to pierce" the shade clothand project through oneof the perforations 4 in a radial wall of the groove 3, thereby obviously holding the shade cloth against separation from the roller.

Inoperation, obviously, the shade cloth is first positioned properly with respect to the roller so that the side edges of the window shade extend perpendicularly to the longitudinal axis of the roller. "Thereupon a ,portion of said shade cloth is depressed into one of said grooves 3. A fastening device 6 is then positioned with respect to one of the perforations 5, whereby the location of a companion slot 4: is determined, and the sharp end of the tongue 12 is then made to pierce the shade cloth and enter such slot. To accomplish this, obviously, the device 7 must be held at an angle to its normal position, whereby, after the tongue has been inserted full length through said slot, the device may be turned on the walls of said slot as a fulcrum until the channeled formation 10 lies within saidgroove. The loop 9 is then forced throughthe perforation 5., whereupon said device is firmly held'in position. r ny number ofv said fastening devices may be thus mounted in place successively and the shade roller thus held securely but detachably in position. All of said fastenfrequently as desired.

The said window shade may also be attached to the roller by the means shown in 'Figures 6, 7 and 8, wherein the longitudinal formations of the roller 1 provide opposed clove-tailed or semi-dovetailed grooves 13, as shown in Figures 6 and 7, respectively; it being essential in this construction that at least oneof the side walls of the groove be overhung by aportion of the circumferential wall of the roller. In other words, the mouth of the groove must be of less width than the bottom thereof.

i A fastening device consisting of 'an'arcuatestrip 14 of'metal, preferably light spring brass, and having anL-shaped projection15 at one end, and a substantially U-shaped projection '16 at its other end, engages at both-said ends'in the opposed grooves. The tongue or free flange of'the projection 15 is of'such length as to extend into the overhung portion of the groove when the other wall or flange of said projection bears'upon the opposite wall of said groove with allowance for the interposed shade cloth. The said strip '16 is substantially semi-cylindrical and, in mounting th'esame on the roller, theshade cloth is first depressed contiguous to-one end ofthe window shade into one of said grooves and may, if desired, overlap' the other of said grooves. The fasteningdevices are then inserted by first holding the free fiange'ofthe projection 15 at such'an angle as to permit it to enter tl1e.grooveand extend into th'e overhung portion of the latter, thus forcing the shade cloth into sa'id por tion of said groove, and is then turned on thefree end of said free flangeas a fulcrum 1 until the substantially radial wall of said projection lies in said groove and the formation 16 at the other endof said striphas sprung into the diametrically opposite groove. By means of this device the shade 1 cloth is absolutely firmly held in position against withdrawal for the reasonthat, upon pull or tension being exerted upon said window shade tendingto tear it away from the roller, the free end of the free flange of the 1 projection 15 will be pulled outwardly relative'ly to the groove and will thusbe caused to more. closely clamp the shade cloth against the opposed overhung wall of said groove without possibility of springing said projection out of said groove, by reason of the opposing force exerted by the formation 16 engaged in the, opposite groove. i

The advantage of this construction is that it does not require perforation of the Walls ofthe groove. or piercing of the shade cloth and will also permit thefastening devicesto be mounted withoutregard to any pa'rtiicular location primarily with respect to the side edges of the window shade, inasmuch as said devices may be moved longitudinally of the roller and adjusted in position after being engaged therewith.

While Figures 6 and .7 differ with respect to the exact form of the groove shown, they may be considered as one figure, inasmuch as only one overhung portion of the groove can at any time be the active portion with respect to its function as a fastening element;

In the construction shown in Figures 9 and 10, the grooves in the roller 1 are substantially V-shaped and one wall of each of said grooves is provided with perforations 17 into which the prongs 18 at the free end of the flange 19 of the arcuate and substantially semi-cylindrical flexible strip 20 are adapted to engage after piercing the shade cloth; said strip 20 being provided at its other end with a channeled or loop formation 21 adapted to engage in one of said grooves to coact with the flange 19 and prongs 18 to hold said strip in place.

In using this form of construct-ion, the shade cloth is first positioned as aforesaid with respect to the roller and a portion thereof depressed into one of said grooves. A fastening device or strip 20 is then placed so that the prongs 18 thereof pierce the shade cloth and enter the perforations 17, whereupon said strip 20 is turned on said prongs as a fulcrum until the formation 21 engages in the opposed groove. Any numher of said fastening devices may be em ployed, as will be obvious, their action with respect to holding the shade cloth in place being substantially identical with the construction shown in Figures 1 to 5 inclusive.

It will be obvious that the specific embodiments shown in the accompanying drawings are capable of great variation in details, without, however, departing from the invention as defined in the appended claims.

What I regard as new, and desire to secure by Letters Patent, is:

1. A metal window-shade roller provided with an external longitudinal groove into which the shade cloth may be depressed and secured and provided at a distance from said groove with a recess, or recesses, and clamps for securing said shade cloth in said groove, each including an arcuate strip of metal having a projectionadapted to fit in said groove and an extension adapted to extend through a perforation in the wall of the groove, the other end of the strip being provided with a projection adapted to enter a recess and engage the wall of the roller.

2. A hollow metallic window-shade roller provided with diametrically opposed longi fudinal grooves, at least one of which is adapted to receive a portion of the windowshade, at least one wall of each groove being perforated at intervals, there being perforations at similar intervals in the cylindrical wall of the roller midway between said grooves, and fastening devices including arcuate metal strips adapted to engage at one end in. one of said grooves and at their other ends in said perforations between the grooves, said first named ends of said strips provided with projections adapted to pierce the shade cloth and engage in the perforations in the wall of the groove.

3. A hollow metallic window-shade roller provided with diametrically opposed longitudinal grooves, at least one of which is adapted to receive a portion of the windowshade, at least one wall of each groove being perforated at intervals, there being perforations at similar intervals in the cylindrical wall of the roller midway between said grooves, and fastening devices including arcuate metal strips adapted to engage .at one end in one of said grooves and at their other ends in said perforations between the grooves, said first named ends of said strips provided with projections adapted to pierce the shade cloth and engage in the perforations in the wall of the groove, said arcuate strips and said perforations between said grooves provided with co-acting formations constituting latches for retaining said strips in place on the roller.

In witness whereof, I have hereunto subscribed my name this 27th day of April, A. D. 1923.

CHARLES WENDEL KIRSCH. 

